MTD isn’t like on NCL. On NCL you can go anytime the MDR is open, usually between 5:30 and 9 pm. On RCL, MTD is scheduled anytime between usually 6:30 and 8:00. This is between the early seating at 5:30 and the late seating of 8 or 8:30. So if you don’t make a reservation for sometime between the 6:30 and 8pm MTD timeframe, you usually have to wait in line to be seated.
We choose MTD because we like to eat between 6-6:30. So early seating is too early and late seating is too late. So with MTD, we usually pick the 6:30 spot and that way we have time to freshen up after excursions and then head to dinner. And we are out in plenty of time for the 9pm show.